Let A and B be sets and let f:A→B be a function let h:P(B)→P(A) which
defined by h(Q)=f-1 (Q) for all Q€P(B).Prove that h is injective if and only if f is injective

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step-by-step explanation:

its kinda hard to answer this when we dont have all the information that we need.

1. 16.64

a^2+b^2=c^2

pr^2=pq^2+qr^2

pr^2=14^2+ 9^2

pr^2=196+81

pr= sqr root of 277

16.64

2. 11.31

c^2-a^2=b^2

18^2- 14^2=b^2

b^2=324-196

b=sqr root of 126

b=11.31

hope it ! (btw im in connections academy to, good luck! )

answer: i ! the answer is   9000 seconds, also d

hope i

-lavira : )